I see now why religious fundamentalism causes one's brain to shrink from lack of proper use as one lives his life by the precepts of faith and blindly follows a ridged set of rules based on the the whims of some fantasy figure Deity.
Through lack of use and faulty reasoning the brain shrinks and this topic is proof I think of a loose it or use it with regards to the brains ability to process information though unused circuitry due to religious prejudice.
To increase brain power one must resist tendency for every thing to become routine so that we change things up do things differently and get out of the automatic pilot while we live our life and religious fundamentalism with it's routine propaganda makes life remarkable simple and boring a snooze feast of sermons about how to life life in uniformity.